A new map shows hidden Martian rivers stretching thousands of miles, offering fresh evidence of a warm, wet ancient Mars.

East Antarctica is the largest ice sheet on Earth. Alone, it holds enough frozen water to raise global sea levels by a ...

The latter part of this week is predicted to bring rain to Massachusetts While there will be rain, an "atmospheric river" is not predicted for the Bay State this week 'Atmospheric rivers' usually ...

Atmospheric rivers can bring much needed rain to drought-struck places, but may be dangerous when they are strong and last long.

What is an 'Atmospheric River'? An atmospheric river is a long band of water vapor that extends over the Pacific Ocean for thousands of miles and is hundreds of miles wide.

Days after an atmospheric river brought record-setting rainfall to California, the state is in the crosshairs of another rainy storm system.

At atmospheric river continues to slam portions of California Tuesday, with multiple inches of rain expected until Wednesday morning.

An atmospheric river is slamming portions of California, with multiple inches of rain expected to drench the area until the storm runs out of moisture Wednesday morning, forecasters say.

A stronger atmospheric river is set to hit Northern California on Monday and then hit L.A. County on Tuesday, aiding hopes of helping end a devastating fire season.

Heavy rain and heavy snow are expected to affect Northern California this weekend as an atmospheric river arrives.

An atmospheric river is moving through the Lake Tahoe and Reno in the following days, but what does that mean?

An atmospheric river is a weather feature that can be beneficial and crucial, but can also be a damaging event - particularly for those near the West Coast of the United States. The definition: An ...